Winds and wind systems on the Earth. 1  Wind is formed by the flow of air in horizontal directions. In meteorological definitions the coming direction of the wind is called wind direction. 2  1 m/s = 3.60 km/hr = 2.24 mph = 1.94 knot.
The production of proteins involves two major steps: transcription and translation. Together, transcription and translation are known as gene expression. The process of transcription only involves two molecules: DNA and RNA. A DNA strand provides a template for the synthesis of a complementary RNA strand. This process is used to synthesize any type of RNA from a DNA template. Transcription of a gene produces a messenger RNA (mRNA) molecule.
Translation is the process of converting the genetic information in the mRNA strand to the form of a protein. The basic unit of this genetic information is a codon. Earlier, we described a codon as a sequence of three nucleotide bases that specifies a particular amino acid. Codon recognition describes the process of matching codons to the correct amino acids. Codons are read down the length of the mRNA strand and translated into an appropriate polypeptide chain.